While allowing a favorable paradigm shift, and better performance,
there are a few limitations of this type of self-training. As pointed out
by [1]}, reviews are considerably diverse from one another. So
an objective that generates a review from other reviews will need to also
predict content not present on the source side, a major difference from
actual summaries of reviews. Such pseudo-summaries will also contain
a lot of first person language which again are less desirable in a summary to users.
